docs: def lazy_load_font(font_size=default_font_size):
      """
      Lazy loading font according to system platform
      """
      if font_size not in _font_cache:
          if _platform.startswith("darwin"):
              font_path = "/Library/Fonts/Arial.ttf"
          elif _platform.startswith("linux"):
              font_path = "/usr/share/fonts/truetype/ubuntu-font-family/UbuntuMono-R.ttf"
          elif _platform.startswith("win32"):
              font_path = "C:\\Windows\\Fonts\\arial.ttf"
          _font_cache[font_size] = ImageFont.truetype(font_path, font_size)
      return _font_cache[font_size]